Filtering-machine



PATENTED FEB. 9, 1904.

W. OSBORNE.

PILTERING MACHINE.

APPLICATION FILED JUNE 13. 1903.

2 SHEETS-SHEET 1.

F a $5 R N0 MODEL,

No. 751,805. PATENTED FEB. 9, 1904. J. W. OSBORNE.

FILTBRING MACHINE.

APPLIOATIQN FILED JUNE 13, 1903.

NO MODEL. 2 SHEETS-SHEET 2 UNITED STATES Patented February 9, i904.

PATENT OFFICE.

JOHN IV. OSBORNE, OF WINCHESTER, ILLINOIS, ASSIGNOR OF THREE- FOURTHS TO CHARLES SMITHSON AND SOL HAINSFURTHER, OF

IVINOHESTER, ILLINOIS.

FlLTERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 751,805, dated February 9, 1904. Application filed June 13, 1903. Serial No. 161,362. (No model.)

To (.LZZ who/n it Wtm concern:

Be it known that I, JOHN W. OSBORNE, a citizen of the United States, residing at Winchester, in the county of Scott and State of Illinois, have invented a new and useful Improvement in Filtering-Machines, of which the following is a specification.

This invention relates generally to filters, and more particularly to that class thereof known as pressure-filters; and the object of my invention is to provide a simple and efficient filtering-machine in which steam-pressure can be employed for the purpose of forcing the liquid to be filtered through the filtering medium.

Another object of the invention is to provide an exceedingly cheap and simple means for returning the piston to its normal position, thereby economizing in the use of steam, inasmuch as the steam is only utilized for the purpose of forcing the liquid through the filter.

The invention consists in the novel' features of construction, combination, and arrangement of parts, all of which will be fully described hereinafter and pointed out in the claims.

In the drawings forming part of this specification, Figure 1 is a perspective View showing the practical application of my invention. Fig. 2 is a vertical sectional view partly in elevation.

In carrying out my invention I employ a hollow cylinder A, which is supported upon suitable legs A, said cylinder having a head B at one end provided with a stufiing-box'B, through which works a piston-rod O, carrying a piston Dupon the inner end, the face of said piston being provided with any suitable form of iiiston-packing to provide a tight joint within the cylinder. The opposite head E of the cylinder is curved, as shown, and provided with a suitable discharge-pipe F, having a valve F. The filtering-diaphragm Ur is arranged adjacent the curved or bulged head of the cylinder, and in practice I prefer to employ two pieces of tripoli stone and an interposed layer of silk. The liquid to be filtered is fed into the cylinder through the pipe H,

having a valve H, a funnel-shaped hopper H being arranged upon the upper end of the pipe, so that the liquid can be poured rapidly into the same.

I indicates a waste-pipe having a valve I, said pipe being employed when the filteringcylinder is being cleaned.

A steam-pipe K enters the cylinder at the rear of the piston, said pipe being connected to the steam-space of a steam-boiler L, said steam-boiler being heated by oil-burners L, which are supplied with oil by means of the pipe L leading from the oil-tank L M indicates a horizontal rack-bar fastened to the rear end of the cylinder and extending rearwarclly therefrom in a horizontal direction, and traveling upon said rack-bar is a pinion N, carried in the bifurcated end O of the piston-rod C, said pinion being mounted upon a shaft N, having a crank-handle l 2 connected thereto.

The steam-pipe K is provided with a valve K, and a branch pipe K is also connected to the steam-pipe and enters the cylinder adjacent the forward end, said branch pipe being provided with a valve K P indicates an exhaust-pipe provided with a Valve P, and O is a pipe through which air can be introduced into the cylinder When de sired, said pipe being provided With a valve O.

In operation the liquid to be filtered is introduced into the cylinder through the pipe H, and steam is then introduced at the rear of the piston and forces said piston forwardly, and such forward movement of the piston will quickly and easily force the liquid through the filtering medium, it being understood that all valves are closed except the dischargevalve F. IVhen desired to return the piston to its normal position, the exhaust-valve is opened and the crank-handle operated, thereby drawing the piston rearwardly, and the cylinder can then again be filled with the liquid to be filtered,. and this operation can be carried on indefinitely.

When it is desired to clean the filter, the waste-pipe valves are opened, and, if desired, steam can be passed into the cylinder through the branch pipe K thereby thoroughly cleaning the filteringcylinder.

It will thus be seen that I provide a simple and eiiicient pressure-filtering machine, one in which steam is utilized for creating pressure, and* one in which the piston is returned by hand-power, thereby economizing in the use of steam.

Having-thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A filtering-machine comprising a cylinder having a piston working therein, and a filtering-diaphragm adjacent one end of the cylinder, supply and discharge pipes connected with the cylinder, a steam-pipe connected also with the cylinder, and means for returning the piston to its normal position, substantially as described.

2. A filtering-machine comprising a cylinder having a filtering-diaphragm adjacent one end, supply and discharge pipes connected to the cylinder and provided with suitable valves, the main and branch steam-pipes, the piston and its rod, and means connected to the pistonrod for returning the piston to its normal position, substantially as described.

3. In a filtering-machine, the. combination with the filtering cylinder having a filteringdiaphragm adjacent one end, the supply and discharge pipes connected to the cylinder, the drain and exhaust pipes, and the air-supply pipe, a piston working in the cylinder and having a piston-rod extending through the rear end of the cylinder, a pinion carried by the piston-rod, crank-handle for operating said pinion, and the rack-bar with which the pinion meshes, substantially as described.

JOHN WV. OSBORNE.

Witnesses:

J OHN R. KING, JOHN H. DYER. 

